Question 4 A WBS (work breakdown structure).... Provides a detailed network diagram of project activities and their inter-dependencies Describes a specific project activity's cost, time, sequence, accountability and variance A Describes a project in terms of the the work activities (at different levels) that are required for project completion. Can be used to compute the probability of completing a project within whatever time the client demands O Question 3 Given the following activity network: A2 A1 A3 Activity A1 takes 5 weeks, A2 takes 7 weeks, and A3 takes 3 weeks with a 50% probability and 9 weeks with a 50% probability. Wha situations and then compute the expected project completion time). 8 12 13 14